237 lines
6.4 KiB
Lua
237 lines
6.4 KiB
Lua
---@class fugitive-ts.Highlights
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---@field treesitter boolean
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---@field background boolean
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---@field gutter boolean
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---@field vim boolean
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---@class fugitive-ts.Config
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---@field enabled boolean
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---@field debug boolean
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---@field languages table<string, string>
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---@field disabled_languages string[]
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---@field debounce_ms integer
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---@field max_lines_per_hunk integer
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---@field hide_prefix boolean
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---@field highlights fugitive-ts.Highlights
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---@class fugitive-ts
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---@field attach fun(bufnr?: integer)
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---@field refresh fun(bufnr?: integer)
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---@field setup fun(opts?: fugitive-ts.Config)
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local M = {}
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local highlight = require('fugitive-ts.highlight')
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local parser = require('fugitive-ts.parser')
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local ns = vim.api.nvim_create_namespace('fugitive_ts')
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---@param hex integer
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---@param bg_hex integer
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---@param alpha number
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---@return integer
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local function blend_color(hex, bg_hex, alpha)
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---@diagnostic disable: undefined-global
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local r = bit.band(bit.rshift(hex, 16), 0xFF)
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local g = bit.band(bit.rshift(hex, 8), 0xFF)
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local b = bit.band(hex, 0xFF)
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local bg_r = bit.band(bit.rshift(bg_hex, 16), 0xFF)
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local bg_g = bit.band(bit.rshift(bg_hex, 8), 0xFF)
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local bg_b = bit.band(bg_hex, 0xFF)
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local blend_r = math.floor(r * alpha + bg_r * (1 - alpha))
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local blend_g = math.floor(g * alpha + bg_g * (1 - alpha))
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local blend_b = math.floor(b * alpha + bg_b * (1 - alpha))
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return bit.bor(bit.lshift(blend_r, 16), bit.lshift(blend_g, 8), blend_b)
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---@diagnostic enable: undefined-global
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end
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---@param name string
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---@return table
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local function resolve_hl(name)
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local hl = vim.api.nvim_get_hl(0, { name = name })
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while hl.link do
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hl = vim.api.nvim_get_hl(0, { name = hl.link })
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end
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return hl
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end
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---@type fugitive-ts.Config
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local default_config = {
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enabled = true,
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debug = false,
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languages = {},
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disabled_languages = {},
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debounce_ms = 0,
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max_lines_per_hunk = 500,
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hide_prefix = false,
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highlights = {
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treesitter = true,
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background = true,
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gutter = true,
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vim = false,
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},
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}
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---@type fugitive-ts.Config
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local config = vim.deepcopy(default_config)
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---@type table<integer, boolean>
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local attached_buffers = {}
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---@param msg string
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---@param ... any
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local function dbg(msg, ...)
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if not config.debug then
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return
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end
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local formatted = string.format(msg, ...)
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vim.notify('[fugitive-ts] ' .. formatted, vim.log.levels.DEBUG)
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end
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---@param bufnr integer
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local function highlight_buffer(bufnr)
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if not config.enabled then
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return
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end
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if not vim.api.nvim_buf_is_valid(bufnr) then
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return
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end
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vim.api.nvim_buf_clear_namespace(bufnr, ns, 0, -1)
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local hunks = parser.parse_buffer(bufnr, config.languages, config.disabled_languages)
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dbg('found %d hunks in buffer %d', #hunks, bufnr)
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for _, hunk in ipairs(hunks) do
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highlight.highlight_hunk(bufnr, ns, hunk, {
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max_lines = config.max_lines_per_hunk,
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hide_prefix = config.hide_prefix,
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highlights = config.highlights,
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})
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end
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end
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---@param bufnr integer
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---@return fun()
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local function create_debounced_highlight(bufnr)
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local timer = nil ---@type table?
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return function()
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if timer then
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timer:stop() ---@diagnostic disable-line: undefined-field
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timer:close() ---@diagnostic disable-line: undefined-field
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timer = nil
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end
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local t = vim.uv.new_timer()
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if not t then
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highlight_buffer(bufnr)
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return
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end
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timer = t
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t:start(
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config.debounce_ms,
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0,
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vim.schedule_wrap(function()
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if timer == t then
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timer = nil
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t:close()
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end
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highlight_buffer(bufnr)
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end)
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)
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end
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end
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---@param bufnr? integer
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function M.attach(bufnr)
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bufnr = bufnr or vim.api.nvim_get_current_buf()
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if attached_buffers[bufnr] then
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return
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end
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attached_buffers[bufnr] = true
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dbg('attaching to buffer %d', bufnr)
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local debounced = create_debounced_highlight(bufnr)
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highlight_buffer(bufnr)
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vim.api.nvim_create_autocmd({ 'TextChanged', 'TextChangedI' }, {
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buffer = bufnr,
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callback = debounced,
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})
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vim.api.nvim_create_autocmd('Syntax', {
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buffer = bufnr,
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callback = function()
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dbg('syntax event, re-highlighting buffer %d', bufnr)
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highlight_buffer(bufnr)
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end,
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})
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vim.api.nvim_create_autocmd('BufWipeout', {
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buffer = bufnr,
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callback = function()
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attached_buffers[bufnr] = nil
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end,
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})
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end
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---@param bufnr? integer
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function M.refresh(bufnr)
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bufnr = bufnr or vim.api.nvim_get_current_buf()
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highlight_buffer(bufnr)
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end
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---@param opts? fugitive-ts.Config
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function M.setup(opts)
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opts = opts or {}
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vim.validate({
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enabled = { opts.enabled, 'boolean', true },
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debug = { opts.debug, 'boolean', true },
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languages = { opts.languages, 'table', true },
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disabled_languages = { opts.disabled_languages, 'table', true },
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debounce_ms = { opts.debounce_ms, 'number', true },
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max_lines_per_hunk = { opts.max_lines_per_hunk, 'number', true },
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hide_prefix = { opts.hide_prefix, 'boolean', true },
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highlights = { opts.highlights, 'table', true },
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})
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if opts.highlights then
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vim.validate({
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['highlights.treesitter'] = { opts.highlights.treesitter, 'boolean', true },
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['highlights.background'] = { opts.highlights.background, 'boolean', true },
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['highlights.gutter'] = { opts.highlights.gutter, 'boolean', true },
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['highlights.vim'] = { opts.highlights.vim, 'boolean', true },
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})
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end
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config = vim.tbl_deep_extend('force', default_config, opts)
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parser.set_debug(config.debug)
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highlight.set_debug(config.debug)
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local normal = vim.api.nvim_get_hl(0, { name = 'Normal' })
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local diff_add = vim.api.nvim_get_hl(0, { name = 'DiffAdd' })
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local diff_delete = vim.api.nvim_get_hl(0, { name = 'DiffDelete' })
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local diff_added = resolve_hl('diffAdded')
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local diff_removed = resolve_hl('diffRemoved')
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local bg = normal.bg or 0x1e1e2e
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local add_bg = diff_add.bg or 0x2e4a3a
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local del_bg = diff_delete.bg or 0x4a2e3a
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local add_fg = diff_added.fg or diff_add.fg or 0x80c080
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local del_fg = diff_removed.fg or diff_delete.fg or 0xc08080
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local blended_add = blend_color(add_bg, bg, 0.4)
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local blended_del = blend_color(del_bg, bg, 0.4)
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vim.api.nvim_set_hl(0, 'FugitiveTsAdd', { bg = blended_add })
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vim.api.nvim_set_hl(0, 'FugitiveTsDelete', { bg = blended_del })
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vim.api.nvim_set_hl(0, 'FugitiveTsAddNr', { fg = add_fg, bg = blended_add })
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vim.api.nvim_set_hl(0, 'FugitiveTsDeleteNr', { fg = del_fg, bg = blended_del })
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end
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return M
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